#A4373F#A4373F

#A4373F is a mid, vivid red. Relative luminance 0.110; OKLCH L 49.7% C 0.143 H 19.9°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#A4373F
RGB	rgb(164, 55, 63)
HSL	hsl(356, 50%, 43%)
HSV	hsv(356, 66%, 64%)
CMYK	cmyk(0%, 66.5%, 61.6%, 35.7%)
CIE-LAB	lab(39.56, 45.38, 20.12)
CIE-LCH	lch(39.56, 49.64, 23.91°)
OKLab	oklab(49.65% 0.1349 0.0488)
OKLCH	oklch(49.65% 0.143 19.9)
XYZ	xyz(17.5749, 10.9862, 5.8967)
Luminance	0.1098 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A4373F #37A49C

analogous

#A43776 #A4373F #A46537

triadic

#A4373F #3FA437 #373FA4

tetradic

#A4373F #76A437 #37A49C #6537A4

square

#A4373F #76A437 #37A49C #6537A4

split-complementary

#A4373F #37A465 #3776A4

monochromatic

#48181C #76282D #A4373F #C5535B #D58187

Accessibility & contrast

On white

6.57

#A4373F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#A4373F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A4373F

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A4373F	#FFFFFF	#000000	##FFFFFF
##A4373F	1.00	6.57	3.20	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534F3F

Deuteranopia (green-blind)

#6F663C

Tritanopia (blue-blind)

#B41F3B

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a4373f;
/* rgb */ color: rgb(164, 55, 63);
/* oklch */ color: oklch(49.7% 0.143 19.9);

Tailwind

colors: {
  custom: {
    50: '#c57474',
    500: '#a4373f',
    950: '#000000',
  },
}

SCSS

$custom: #a4373f;
$custom-light: #c57474;
$custom-dark: #000000;

JSON

{
  "hex": "#a4373f",
  "rgb": {
    "r": 164,
    "g": 55,
    "b": 63
  },
  "hsl": {
    "h": 355.596,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.49651,
    "c": 0.14343,
    "h": 19.9
  },
  "luminance": 0.10984
}

Semantic roles & 50–950 ramp

primary

#A4373F

secondary

#79BEB9

accent

#D9CF4F

background

#FCF7F7

surface

#F9EDED

border

#D2C8C8

text

#140908

muted

#827B7B

Preview Lab

Preview with #A4373F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →